Gas: heating and illuminating – Generators – Cupola
Patent
1978-05-02
1979-03-06
Bashore, S. Leon
Gas: heating and illuminating
Generators
Cupola
48 77, 277 88, 3081871, 414147, C10J 330, C10J 350
Patent
active
041428684
ABSTRACT:
The present invention is directed to a wear compensating seal arrangement for use in a rotary piston feeder utilized for feeding pulverized coal into a gasifier operating at relatively high pressures and elevated temperatures. The rotary piston feeder has a circular casing with a coal loading opening therein diametrically opposed from a coal discharge and contains a rotatable disoidal rotor having a cylinder in which a reciprocatable piston is disposed. The reciprocation of the piston within the cylinder is provided by a stationary conjugate cam whereby pulverized coal from a coal hopper at atmospheric pressure can be introduced into the cylinder and then discharged therefrom into the high pressure gasifier while maintaining minimal losses of producer gas and the expenditure of minimal energy which would detract from the efficiency of the gasification. The seal arrangement of the present invention is disposed between the rotor and the casing about the coal discharge and prevents the high pressure gases from within the gasifier from escaping between these relatively movable parts during operation of the coal feeder. The seal utilizes a primary seal in contact with the rotor and a secondary seal supporting the primary seal. The primary seal is continuously urged towards the rotor by springs and the high pressure producer gas.
REFERENCES:
patent: 3127184 (1964-03-01), Talamonti
patent: 3147013 (1964-09-01), Tracy
patent: 3194569 (1965-07-01), Utvitch
patent: 3355178 (1967-11-01), Hornaday
patent: 3397894 (1968-08-01), Mastriforte et al.
patent: 3833273 (1974-09-01), Rickley et al.
patent: 4025317 (1977-05-01), Gencsoy
Gardner John F.
Gencsoy Hasan T.
Bashore S. Leon
Carlson Dean E.
Hamel Stephen D.
Larcher Earl L.
The United States of America as represented by the United States
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